code: def test_get_type_numpy_categorical(self):
      tmp = np.array(["a", "b", "c"])
      tmp_type = PreprocessingUtils.get_type(tmp)
      self.assertEqual(tmp_type, PreprocessingUtils.CATEGORICAL)
  
file_path: mljar-supervised/tests/tests_preprocessing/test_preprocessing_utils.py
imports: import unittest
  import numpy
  import pandas
  from supervised.preprocessing.preprocessing_utils import PreprocessingUtils
label_desc: Use image node_id 2 for calling the PreprocessingUtilsTest obj's underlying member method code with example usage: obj.test_get_type_numpy_categorical() without return types